20139680

素因数分解:

$2^5\times 5^1\times {\mathrm{11}}^1\times {\mathrm{11443}}^1$

素因数の和:11469

約数の個数: 48

約数和(自身を含む): 51909984

約数和(自身を除く): 31770304

約数列:

[1, 2, 4, 5, 8, 10, 11, 16, 20, 22, 32, 40, 44, 55, 80, 88, 110, 160, 176, 220, 352, 440, 880, 1760, 11443, 22886, 45772, 57215, 91544, 114430, 125873, 183088, 228860, 251746, 366176, 457720, 503492, 629365, 915440, 1006984, 1258730, 1830880, 2013968, 2517460, 4027936, 5034920, 10069840, 20139680]

約数ペア:

[(1, 20139680), (2, 10069840), (4, 5034920), (5, 4027936), (8, 2517460), (10, 2013968), (11, 1830880), (16, 1258730), (20, 1006984), (22, 915440), (32, 629365), (40, 503492), (44, 457720), (55, 366176), (80, 251746), (88, 228860), (110, 183088), (160, 125873), (176, 114430), (220, 91544), (352, 57215), (440, 45772), (880, 22886), (1760, 11443)]